Drawing-pen



C, E. BURNAP, DECD.

s. BURNAP, ADMINISTRATRIX.

DRAWING PEN.

APPLICATION FILED JULY 29. 1913. RENEWED DEC. 9. 1920.

Patented July 112, 1921.,

2. SHEETS-SHEET l.

WITNESSES C. E. BURNAP, DECD. s. BURN/1P, ADMlNISTHATRiX.

DRAWING PEN.

APPLlCATlON FILED JULY 29. 1913' RENEWED DEC. 9. I920.

. 1,384,232 Patented July 12, 192k 2 SHEETS-SHEET 2.

W??? asses: Z}? 06/7 fa I:

CHARLES E. BURNAP, OF CHICAGO, ILLINOIS;

SARAH BUBNAP, ADMZNISTRATRIX OF SAID CHARLES E. BURNAP, DECEASED. ASSIGNOR TO THE C. "31. PLEASE COD IPA Y. OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

DRAWING-PEN.

Application filed July 29, 1913, Serial No. 781,711.

T all to 710m it may concern Be it known that I, CrLiRLns E. Bonner, a citizen of the United States, residing at Chicage, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Drawing-Pens, of which the following is a specification.

This invention relates to drawing pens and has for its object the combination in a single instrument of a ruling pen and aquill pen or common writing pen.

Heretofore (lraftsnien have found it necessary to use the common pen and ruling pen alternately in various parts of a drznving particularly when the drawing is nearing completion. Many parts of a mechanical drawing must be made with a common quill pen and during the time of doing this the ruling pen must be laid down. While not in use the ink in the ruling pen will become dry and hard. Before the ruling pen can be used again the dry ink must be wiped out and the pen refilled. In like manner the common pen is laid down and the ink is dry ing while the ruling pen is in use. .lt must also be wiped and refilled when again taken up. This constant wiping and refilling of the pens results in a serious consumption of time. In fact when a draftsman is approaching the end of a drawing and is finishing various odds and ends in his work, the time lost in wiping and filling his pens amounts to more than that actually devoted to his drawing.

In the present practice when a. draftsman finds it necessary to change pens he first must lay down the pen he is using, pick up the other pen, pick up a. cloth and wipe out the partially dried ink, remove the cork from the ink bottle, deposita quantity of ink in the pen, replace the cork in the bottle, and shift the pen from one hand to the other, before he can continue with his work on the drawing. This procedure is repeated many times and in many cases the accumulated loss of time amounts to hours.

The object of the device herein described is to save this time. As will be seen an instrument is provided in which a common quill pen may be instantly moved into posi- Specification of Letters Patent.

Patented July 12, 192i. Renewed December 9, 1920. Serial No. 429,602.

tion for use when wanted. WVhen not in use it is as quickly moved out of the way. The instrument may then be used as a ruling pen, in every respect as well as though the quill pen were not attached.

in important consideration in connection with this device is the fact that the same supply of ink is used by both pens. The point of the quill pen is constantly immersed in the ink of the ruling pen. When one pen is filled the other is filled also. When converting the tool from one form to the other no attention to the ink is necessary.

Other objects and advantages of this device will become apparent in the following detailed description when taken in connection with the drawings, in which- Eigure l is aside elevation;

rig. 2 is an elevation at right angles to Fig. l I

Fig. 3 is a cross section on the line 3-3 of J 2; v

Fig. l is a cross section on the line &4 of Fig. 2;

Fig. 5 is a view of the blank from which the quill pen holder is made;

Fig. 6 is a perspective view of the quill pen holder;

Fig. '7 is a vie of a modified form;

Fig. 8 is a view at right angles to Fig. 7;

Fig. 9 is a perspective view of the ruling pen showing the form of one of the blades;

Fig. 10 is a perspective view of the writing pen holding clip; and Fig. 11 is a. perspective view of the writ mg pen.

.t will be seen that the device comprises the usual type of ruling pen having the adjustable blades or nibs 10 and 11, between which the common quill or writing pen 12 is placed. The quill pen is carried by a slidn j holder 13 by which it may be adjusted instantly to a position in which its point projects beyond the ends of the blades of the ruling pen; or it may be withd awn to a position entirely within them.

The holder 13 is provided with a forked end comprising three tongues 14, 15 and 16. The body of the pen 12 is inserted between the tongues in the manner clearly shown in the drawings particularly in Fig. 3. The curved body of the pen is inserted in the narrow slots between the tongues and is securely held therein by friction and by the clamping effect of the elastic tongues.

The opposite end of the holder is folded over to a position adjacent the pen holding end. the blank shown in Fig. 5 being bent at the point 13, Fig. 2. This form gives it an elastic property which causes it to press outwardly against the inner faces of the ruling pen blades. The friction thus caused insures the holder being firmly held in position between the blades.

The holder is provided with lateral wings l9 and which are folded to a position at right angles to the body of the holder.

These wiir-s are adapted to bear upon the no of rue blades l0. For the bl ado is made s raight and 1 iatera c this rcaso n its edges parallel to serve as a guide for the wings l to cause the h- I be centrally held am ud a' longitu rom one position to the 0 nor.

The wu e made large and flat to serve also as means .1: enabling the user to push the holder f: In one positi to the other. These flat surfaces also recon o the pressure of the fing rs of the hand when the pen is being held and used.

In order to retain the holder at either end of its movement, an elastic tongue 2i is provided having an inr rardly henu end 22 which is ad. to snap into the notches 23 and ill in the blade 10. These notches have sloping sides tlt y pea-mi be dislodged tote l the holder to from either 0 its positions by a moderate cndwise pressure. 7

he upper end 25 of the holder is given a slight inward bend to cause it to bear upon the back of the pen 1? and more firmly hold it.

For the salre of clearness in thedrawing the points of the ruling pen are shown widely separated. The end 25 of the holder is then not in cont: ct with the back of the quill pen.

Slots 26 and 27 in the two arms of the holder allow the screw 28 to pass through them without interference.

The tongue 16 of the holder is outwardly bent at its end 29 to bear upon the blade 10 and thereby keep the quill pen spaced from said blade. The two bent ends 25 and 29 cooperate to hold the quill pen in a central. position between the blades of the ruling pen.

Tn Figs. 7 to 11, inclusive, T have illustrated a modified form of my invention in which the writing pen holder 30 is made from a single leaf of metal having a curved or bowed form which lies between the blades of the ruling pen and in yieldable frictional contact with both said blades. The forward portion of the holder is provided with inwardly and upwardly curred lugs 31, 32 for engaging and holding the writing pen 33. The lugs 31 have upward extensions 31 which bear upon the upper blade 35 of the ruling pen in order that the blades of said pen may be wedged apart in advance of the writing pen when the latter is being pushed outwardly to its operative position.

The downwardly projecting lugs 36 bear upon the lateral surfaces or edges 37 of the lower blade of the ruling pen and serve to guide the writing pen longitudinally and to hold it firmly against lateral movement. Similar lugs 38 at the rear or inner end of the holder also bear upon the lowerblade. The lower edges of the lugs 38 are beveled to facilitate swinging, of the holder to an angular positionwith relation to the ruling pen for cleaning purposes. Such a position is indicated in dotted lines in Fig. 7.

The lugs 39 project laterally to permit the user to-easily push the holder from one position to the other with his fingers. These lugs may have any other position on the holder, such for example, as that shown in dotted lines at 40.

' The middle portion of the holder is bowed or curved at ll to bear upon the upper blade. This curvature is sutlicient to produce the desired frictional contact with the blades. The ,metal is of such a thickness and elastic quality as will produce the desired resistance to movement.

At the extreme inner end of the holder 1 have provided a small lug 42 which bears directly upon the lower blade and which drops into notches s3 and laat the extremitics of the holders movement. l3y means the holder is held firmly in either p0: ition againstaccidental displacement. The

operator can dislodge said lug from either of are in a very convenient position for that The inventor of the instrument purpose. has found that by placing the end of his forefinger upon the head of the screw 28 he can more conveniently move the ruling pen than the quill pen. The ruling pen maybe mored up and down while holding the quill pen holder firmly by the thumb and second finger. The thumb and second be held in constant contact with the wings 20 and 21 or 39 while the forefinger manipulates the instrument.

Most draftsmen, however will probably finger may this 5 present either of them in position for use, the movement of one of said pens taking place along an axis passing through the point of the otherpen.

In testimony whereof, I have subscribed my name.

CHARLES BURNAP.

Witnesses HEN Y A. PARKS, VALTER A. SCOTT. 

